Undead Familiars

Choose a pile of bones or a corpse of a tiny beast of CR 0 within range. That corpse is reanimated as an Undead Familiar under your control. An Undead Familiar uses the stat block of the corpse you used to reanimate it, except that the creature type changes to undead, it can't attack creatures and it no longer requires air, food, drink, or sleep.

While an Undead Familiar is within 1 mile of you, you can communicate with it telepathically. Additionally, as an action, you can see through its eyes and hear what it hears as long as you maintain your Concentration, gaining the benefits of any special senses that the Undead Familiar has. During this time, you are deaf and blind in regard to your own senses.